Home / 135,026.69-186,331.15-77,661.68

Finding the Fourth Proportional to 135,026.69, 186,331.15 and 77,661.68

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Solution

The fourth proportional to 135,026.69, 186,331.15 and 77,661.68 is: 107,169.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,026.69 : 186,331.15 = 77,661.68 : x
  2. Step 2: Convert to fraction form
    135,026.69/186,331.15 = 77,661.68/x
  3. Step 3: Cross multiply
    135,026.69x = 186,331.15 × 77,661.68
  4. Step 4: Simplify right side
    135,026.69x = 14,470,789,310.75
  5. Step 5: Solve for x
    x = 14,470,789,310.75/135,026.69
  6. Step 6: Final answer
    x = 107,169.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.